Downdater 1.50->1.00 by Dark_AleX/Yoshihiro/Mathieulh
This is a program to downgrade a PSP from 1.50 firmware revision to 1.00.
The program has been succesfully tested on various psp's. Despite that, remember that writing to the
flash is always dangerous, and the authors cannot be responsabilized by any damage as this software is free,
unlicensed and comes with no warranty.
This tool requires the help of a 1.00 user in order to make the downgrade.
Instructions for the 1.00 user
- Copy the downhelper100 folder to /PSP/GAME/ and start the program.
- It will dump your flash and your ipl to the memory stick. After finished, the program will exit.
Send the folder created at the root of your memstick called DOWNDATER to someone with 1.50 to let him downgrade.
Instructions for the 1.50 user
- Copy __SCE__downdater100 and %__SCE__downdater100 to /PSP/GAME/
- Get the DOWNDATER folder from someone with 1.00 and put it in the memstick.
- Get the official Sony 1.50 update and put it under /PSP/GAME/UPDATE
Some links to get it:
http://www.psphacks.net/files/PSPFirmwares/1.5/
http://dl.qj.net/PSP-Firmware-1.50-F.../163/catid/163
- Start the program.
Note: you need to set the language of your psp to either english or japanese before starting
(anyways, it will advice you if you don't have that requirement and it will exit safely)
Also, connect the PSP to the AC adaptor.
- After a confirmation with the X button, you psp will be flashed to 1.00.
DO NOT REMOVE the memstick and DO NOT shut down the psp.
After it is finished, the program will tell you to restart the psp manually. Do it.
At this moment you'll have probably a 1.00 if all went fine.
Thanks to
- Ookm for being the first in flashing the 1.00 ipl in 1.50
- The beta testers Freeplay and others.
- Mélo_FMX RIOT for the icon.